Obtained this to integrate with AudioBus, which it seems to do fine. The documentation may assume you already have some familiarity with this type of processing, but the examples help a lot. I was able to filter out mod wheel and expression controllers that I didn’t want sent to some instruments, and limit the range of notes sent to others.
Update April 2024 - I still think this is a great problem-solver. I used it for interfacing a keyboard which sends too many CCs to external gear, and I could block some messages and transform others to what I wanted. The example presets contain all of the techniques I needed (with some adaptation).
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